96 4R, Sputters when I accelerate

[TdubyaJ]

I have a 96 4Runner, 4cyl, 5 speed transmission. It started missing and sputtering anytime I would accelerate. If I held the pedal long enough it would straighten out and fly. But as soon as I let off or shifted gears it would sputter again. I had the catalitic converter replaced, replaced the plugs, wires and cap, the fuel filter and had the throttle body cleaned. It worked fine for a week or so and recently has started doing it again. The mechanic said I would need to replace the EGR valve next. I had the fuel pump replaced about a year ago. The weird part is, is that once in a while it will completly clear up and run fine for a day or so but at some random moment will start sputtering again. Is the EGR valve a viable replacement option at $150+? Please help!!

280k+ miles, regular maintenance and oil changes.

 

[Jeff4runner]

Before you try replacing anything, seafoam the engine through the intake. You could just have some deposits in the engine, and it should clean it out. Its not a miracle fluid, but it works wonders when used right. I would suggest researching it, then getting the spray can seafoam. Its a little safer (mixes with air more), and you can hold the nozzle a little farther from the vacuum line. You'd need someone else to help you do this process, but its worth a shot. 8$ a can at walmart, and can do 2 or so treatments.